Calculating-machine.



A. F. POOLE.

CALCULATING MACHINE.

APPLICATION FILED OCT.6. 1913.

1,1 91 ,928. Patented July 18, 1916,

'3 r3 3 SHEETS-SHEET I.

A. F. POOLE. CALCULATING MACHINE. APPLICATION FILED 0CT.6, 1913.

1,191,928 T Patented Ju1y18,1916.

, 3 SHEETSSHEET 2.

A.F'.POOLE. CALCULATING MACHINE APPLICATION HIT" OCT. 6, 19 13.

Patented July 18, 1916.

3 SHEETS-SHEET 3- bers inserted scridfim in them.

UNITED STATES PATENT OFFICE.

ARTHUR I POOLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO WAHL ADDING MACHINE 00., OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

CALCULATING-MACHINE.

Original application filed September 16,

the type used as attaclnnent to the Remington typewriter, in which is a set of totalizers mounted on a bar rigid with the typewriter carriage. These totalizers are adapted to perform calculations with numbers arranged in vertical columns. They may therefore, be called columnar totalizers. In the calculating machine is a reciprocating truck adapted to be connected to the columnar totalizers while the latter are performing calculations in certain zones. This truck carries a second totalizer which in structure is exactly. like the columnar totalizers except that it is of somewhat larger capacity and it is used to perform calculations with numbers arranged in any order on the paper. Usually, however, it performs calculations with numbers in horizontal lines or what is termed cross footing. 'lhroughout this application this second totalizer will be called the universal totalixer. As, the carriage moves from right to left the columnar totalizers pass over a master mechanism and thereby have num- A similar master mechanism'is provided for the universal toLaliZer. which totalizer is adapted to be connected to, and afterward move with, any columnar totalizer during the insertion of a number; consequently the same number is thereby inserted in both totalixers. This number may be inserted in either totalizer positively or negatively. It may sometimes happen that anumber is intended to be entered into both a columnar-and the universal totalizer, and the latter, owing to failure of the connecting mechanism between the two is not in position to receive such number. Unless the operator noticed that the nui'nber which he was insertingin the machine was not entered into the universal totem-Le and should correct such er- Spccification of Letters Patent.

.My invention is a calculating machine of Patented July 18, 1916.

1912, Serial No. 720,619. Divided and this application filed October 6, 1913. Serial No. 793,636.

ror immediately, the universal totalizer would make a wrong calculation.

It one of the ob ects of my invention to so interlock the columnar and universal totalizers that unless the universal totalizer 1s in its proper position to receive a number which is intended to go into it,the machine will be locked and further calculation will be prevented until the error is corrected. v

.\nother object of my invention is to provide an elastic connection between the columnar and the universal totalizers, so that the latter may be connected to the former without a jar.

linother object of my invention is to so designthe machine that the same totalizer may be used for either a columnar or the universal totalizer. The totalizers used with the \Vahl machine are made for a va riety of tables with a variety of arrangements of the numbers. for instance.

ill) 995)!) 99 ct cete'ra. Consequently from a manufacturing standpoint it 'is very desirable that the same totalizer which is used as a columnar totalizer may also be used as a uni-- versal totalizer. This avoids the necessity of carrying two styles of each type in stocli. In addition 'to the usual truck on which the columnar totalizers are mounted I have provided a reciprocating truck of identical cross section and-having identical means for carrying the universal totalizer as the truck carrying the columnar totalizer. Therefore one type of machine may be used to calculate problems in feet and inches which employs one kind of a table or problems in English money which employs a different table and so on. All that is necessary is to put the totalizers adapted for the particular table to be used on the universal and columnar trucks. j

There area great number of parts in the calculating machine described in this application which are not necessary to the understanding of my invention. They would simply confuse the novel partswhich I shall ence may he had to the accompanying drawings forming part of the specification.

Figure 1 is a front elevation of the machine. Fig. 2 is a right elevation. Fig. 3 a plan, and 1. 5, (i, 7, S and 9 show various details which may be identified by the reference numbers associated therewith, and which will be referred to as the occasion arises in the following specification.

I shall first describe the elastic connection between the columnar and universal totalizers. The calculating machine is mounted on the framework of the ordinary temington typewriter. l\loving rigid with the typewriter carriage is a bar 1. which carries the columnar totalizers, 2, 3 and 1. These are *asily adjustable on the bar 1 by latches 36. At the side of the machine and rigid with the framework are two guides 1. Sliding on these guides is a bar 2 on which is mounted the universal totalizer 3. This bar as shown in i 9, has one surface identical with the corresponding surface of the bar 1.

There is also a. single notch (not shown} adapted to engage the latch 36. and thus hold the universal totalizer 3 at a definite place on the bar 2. Rigid with the bar 2 is a tube 4'. to one end of which is attached a spring 5 fastened to an end plate (3. which is rigid with the frame of the machine. The bar 2 has a projection 7 on which is pivoted a link 8 at a point 9. Pivoted on the link 8 is a connecting bar 10". On the link 8 is a pin 11 which engages in a slot 12 in the projection 7. and forms the pivot of the bar 10 on the link 8. A spring 13 serves to hold the pin 11 against the. right end of the slot 12. A spring 11 between the bar 10 and the link 8 tends to rotate the bar 10 in a clockwise direction. On the end of the connecting bar 10 is a hook 15. llach of the columnar totalizcrs 2. 3 and 1 has its right side plate extended and the hook 15 'is adapted to engage with these extensions. 'A slot 16 is 7 provided in the bar 10 which slot engages with a pin 17 rigid in the frame of the machine. In Fig. 1 the hook 15 is shown engaged with the columnar totalizer As the typewriter carriage moves to the left thereby carrying the columnar totalizer with it, the universal totalizer 3 will move to the left also. 'hen the right end of slot 16 has reached the pin 17 the cam surface on the slot 16 'ill rotate the connecting bar 10 in a counter clockwise direction, thereby disengaging hook 15 from the side plate of the columnar totalizer 3. Under the influence of the spring 5 the universal totalizer 3 will return to the position shown in Fig. 1. The hook 15 will then be in a position to engage with the side plate of the columnar totalizer 1-. Thus it will be seen that as totalizer will move in unison with the columnar totalizer until a certain point has been reached. It will then disengage itself from said columnar totalize' and return to its normal position, ready to be engaged by the succeeding columnar totalizer.

It is tobe noted that the extensions on t]; columnar totalizers engaged by the hook 15; are on the right side plates of these total izers. Fromthis it follows that the disconnection of the hook 15, occurring on its engagement with the pin 17, is independent of the position of the left side plate at that time. The width of one of these tot'alizers, of course, is determined by the distance of .the left side plate from the right one, and

since this left side plate has no function whatever during the disconnection of hook 15 its distance at the time of disconnectionis immaterial to the disconnection itself; consequently the universal totalizer will be disconnected from the columnar totalizcrs when these columnar totalizers are of varying widths.

The typewriter on which this calculating machine is mounted is provided with a set of tabulating keys. Assume that a number has just been inserted in a columnar totalizcr and that instead of advancing the next succeeding columnar totalizer to its proper place by successive manipulation of the. space bar it were advanced by the manipulation of a tabulator key. The typewriter carriage would at once start moving to the left. the hook 15 through the action of pin 17 in slot 16 would be disengaged from the columnar totalizer and under the influence of the spring 5. the universal totalizer 3 would start to 'move to the right, carrying of course hook 15 with it. But before this normal position would be reached the hook 15 would become engaged with the right side plate of the next succeeding columnar totalizer. When this engagement takes place the bar 10 is going in one direction and the columnar totalizer and the -arriage on which are mounted the columnar totalizers is going in the opposite direction. If the bar 1O were rigid with the universal totalizer 3. an undesirable jar would thereupon result. However in my present invention this jar is modified by the spring 13, since in accordance with the afore described construction. this spring 13 acts as a buffer between the bar 10 and the universal totalizer 3. The tension of the spring 13 is much stronger than that of the spring 5 so that after 13 has yielded in consequence of the engaging blow, 13 will pull the pivot 11 against the right hand side of the slot 12 and thereafter the bar 10 will act as if it were rigid with the universal totalizer 3;

I will now describe the means by which the calculating machine is locked when the universal totalizer is not in a position to receive a number Which-is intended to be entered therein. So far lhave said nothing about the master mechanisms which are used to enter the numbers 1n the columnar and universal totalizer-s. The typewriter is provided with numeral keys and a reciprocatory motion of these numeral keys is ultimately transformed into a rotary motion of the master wheel 20 engaging with the columnar totalizers. This motion varies in amount according to the particular numeral key is actuated. At the same time any numeral key is actuated and before the motion of the master wheel begins the master dog 21 moves from its full to its dotted position. Mechanism for accomplishing these motions is thoroughly described in the patent to \Vahl #893,719, towhich reference may be had and I shall not, therefore, enter into a description of the connection between the numeral keys and the master wheel 20 and master dog 21 since such connection is not material to my present invention. The

' actuator for the universal totalizer is set to the right and below the actuator for the column totalizers. This actuator f r the universal totalizer is similar in constr iction to the columnar actuator and has its similar parts connected by a parallelogram linka e.

Referring to Fig. 2, 32 and 33 represent the rock and sector shafts respectively of the actuator for the columnar totalizer. These shafts have the same structure and function as shafts number 69 and 89 in the said patent of Wahl. Fastened to the ends of the shafts 32 and 33 are arranged arms 34 and 35 which are connected. by links 36 and 37to arms 34 and 35 connected to the rock and sector shafts 32 and 33 of the actuator for the universal totalizer. now be readily seen that these similar parts of the two actuators are linked together and consequently any motion of the shafts 32 and 33 will be reproduced identically in the resulting motions of the shafts S2 and 33. At the same time the master wheel 20 and the master dog 21 move as a result of oper ating rock and sector shafts 32 and 33,the master wheel 20 and master dog 21 of the actuator for the universal totalizer move also as a result of the motion of the rock and sector shafts 32 and 33. The direction of rotation of the master wheel 29 engaging with'the universal totalizer is determined by the position of a calculation dcterminator 22. This calculation determinator may occupy any one of three positions. In one position. that is to the extreme left, the master wheel 20 will revolve in a direction to insert a number positively into the universal totalizer 3, on the actuation of a digit key. In the middle or dis connect position themaster wheel. 20 will be stationary during the actuation of. a digit key. In the third, or extreme right It will .shall be done by the universal totalizer 3,

that is, that the universal totalizer shall receive a number positively, not at all, or negatively, according as the calculation determinator is in its left, middle or right positions.

The mechanism for connecting the digit keys with the master wheel 20 and the master dog 21 is shown and described in the patent to John C. \Vahl, Number 893,719, July 28, 1908. Mechanism for connecting the master wheel 20 and the master dog 21 to the digit keys is shown and fully described in my copending application Serial Number 709,010, filed July 12, 1912. The

particular mechanism by which the calculain the above mentioned application, there-' fore I shall not describe any of these above mentioned mechanisms, but shall start my description of the interlock on the following assumption: First; that on a depression of a. digit key of the typewriter that the master wheel 20 will revolve an amount corresponding to the digit key depressed, and the master dog 21 will move from its full to its dotted position, Fig. 2. Second; on such movement of the digit key the master dog 21 will move from its full to its dotted position. Third; on depression ofjthe digit key the consequent direction of motion of the master wheel 20 will be determined by the position of the calculation determinator.

Pivotally mounted on the universal totalizer bar 2,-at 31, is alock 23 held by a spring 24 against a stop 25 (best shown in Figs. 2 and 5). When the universal totalizer bar 2 is in its normal position the lock 23 is in the same vertical plane as the mas-- ter dog 21. Depressing any digit key will rotate the master dog 21 from its full to its dotted position. If the universal totalizer bar 2 is in its normal position the lock 23 will. be coincidently rotated in'a clockwise direction.

Moi'ing in a pillar 26 (Fig. 6) in the framework is a slider 27 (Figs. 7 and 8), attached to an arm 29 rigid with the calculation deterininator 22. A vertical slot 30, in the pillar 26, is in the same vertical plane as the master dog 21. slider 27 registers with the slot 30 when the calculation determinator is in its middle position. When the universal totalizer bar 2 is in its normal position the lock 23 registers with the slot 30 also. Consequently if the calculation determinator is in its mid- A slot 28 in the dle or disconnect position, the lock 23 will be free to enter the slot 30 when said lock is caused to rotate by movement of the master dog 21, from its full to its dotted position. However suppose the calculation determinator is in either of its extreme 'positions when the totalizer bar 2 is in its normal position. Then the slot 28 will no longer be in registry with the slot 30 and the motion of the lock 23 will be prevented by the part of slider 27 which lies adjacent to the slot 28. Preventing rotation of the lock 23 will of course prevent motion of the master dog 21 and consequently of the digit keys and the calculating machine will be locked.

Having given a description of the particular mechanism by which this lock is accomplished I will now go into the operation of it. The width of the universal totalizer is greater than that of any of the columnar totalizers since the universal totalizer must have capacity enough to exhibit the sum of the largest numbers which can be exhibited by the columnar totalizers. Consequently whenever a number is being inserted in a columnar totalizer the universal-totalizer 8 is displaced from its normal position.v It will be remembered that the lock 23 is engaged by the master dog 21 only when the universal totalizer bar 2 is in its normal position. In any other position lock 23 is not in the same Vertical plane as the master dog 21 and consequently is not rotated by it. Therefore whenever the bar 2 is displaced from its normal position, which is the case when a number is being inserted in the universal totalizer 3, the lock is ineffective owing to the lock 23 and master dog 21 being in different planes. But should the hook 15 accidentally become disconnected from the totalizerwith which it was engaged, the universal totalizer bar 2 under the influence of the spring 5 would at once snap back to its normal position, and further operation of the machine would thereby be prevented.

It may be desired to insert a number into a columnar totalizer only. Furthermore, to avoid the useless reciprocation of the universal totalizer during such insertion the columnar totalizer would have the extension on its side plate normally engaging the hook 15 removed. The universal totalizer will then rest in its normal position during insertion of the number in the columnar totalizer and the calculation determ'inator 22 would be in its middle or disconnect position. Bearing in mind that owing to the link conncction of the actuators for the columnar and universal totalizers locking one also locks the other it is obvious that the lock 23 would prevent the insertion of a number in the columnar totalizer. Consequently it is necessary to have the lock 23 inoperative in the above recited case. This is provided for by the insertion of the slot 28 in the bar 27.

From the aforegoing description it is evident that the lock 23 is effective when two conditions coincide, first, the universal totalizer 3 is in its normal position; second, the calculation determinator 23 is in either of its extreme positions, which extreme positions determine that a number shall go into the universal totalizer on the actuation of a digit key. The universal totalizer should not be in its normal position when a number is to be entered into it. Consequently this lock will insure the totalizer being in a position to receive a number when the calculation determinator determines thatv a number shall go into the universal totalizer.

talizer. In such a case on starting to insert a number which was desired to be entered into both totalizers the calculation determinator will of course be in one or the other of its extreme positions but the universal totalizer not being connected to the first columnar totalizer would remain in its normal position as the carriage moved to the left. Consequently the whole calculating machine would be locked. This would at once call the attention of the operator to his mistake and allow correction of the sane before any number was inserted in the machine. In case it is desired to insert a number not to be calculated such as a date, for instance, in a space in which the machine would be normally locked the machine may be unlocked by throwing the calculating determinator 22 to its disconnect position.

In the machine herein described the reciprocatory universal totalizer is compara- 'In some of the claims I have used the.

term means to lock said calculating machine by which I mean a lock rendering the machine inoperative in so far as operation of the numeral keys -18 concerned. The

particular location of this lock is of minor importance. In this present application I have shown it as operated by the master dog 21. It is obvious that there are a munber of other places in the machine where this lock might be placed. For instance, in cooperation with the master wheel 20, the master Wheel 20, the master dog 21,- the various shafts which serve to operate the above mentioned parts, etcetera. However all of these parts have one feature incommon, that is, preventing the motion of any one of them will prevent the operation of:

however the totalizer may be stationary and the master wheel reciprocate, or for instance arset of triggers may be used and a piece to brrgage scriotim with the triggers may reciprocate. My present invention may be applied to any of such constructions and in the claims I have accordingly called the reciprocating member a decimal carriage.

It will be observed in my present invention that the locations on the typewriter carriage which determine the points at which the universal totalizer shall be connected to the said carriage are the columnar totalizers themselves. It is obvious that instead of using the columnar totalizers aseries of stops might be put on. the typewriter carriage or a bar having slots at predetermined points might be used, so I have accordingly in the claims called the points on the carriage at which the universal totalizer will be connected to the carriage, the

connecting locations;

The construction of the universal totalizer bar 2 so as to take the same totalizer as is used on the columnar bar 1, is of great advantage since the totalizers may be interchanged with each other, thus readily accommodating themaehine to problems em ploying numbers of various magnitudes. As before stated, this construction obviates the necessity of carrying in stock two types of totalizers for all the various totalizersmanufactured. For instance the lVahl Adding Machine Co. make approximately 850 different styles of totalizers. These totalizers in addition to calculating in the decimal systern, will calculate in 68 other systems, such as hours, minutes, and seconds, in which the v base is instead of 10; in teet and inches, in which the base is 12;1n English currency, in which the bases are 20 and 12, etc. Each of the systems includes a number of totalizers of various spacings and ca-.

described the combination of and columnar totalizers whereby the pacities. By means of my improved construction, a machine employing the universal totalizer bar such as I have described in. the foregoing specification may be used with any of these totalizers without change. Many changes may be made in the precise construction herein disclosed without departing fromithc spirit thereof.

Having thus described. my invention, I claim:

1. In a calculating machine of the type a columnar totalizer, a universal totalizer adapted to be intermittently connected to said columnar totalizer, and means between said universal shock of connection is diminished.

2. In a calculating machine of the type described the combination of a decimal carriage having a series of connecting locations, a second decimal carriageadapted to be intermittently connected to said first decimal carriage, and elastic connecting means between said first and second carriages whereby the shock of connection of said second carriage with said first carriage is diminished.

3. In a calculating machine of the type described the combination of a decimal carriage having a series of adjustable connecting locations, a second decimal carriage adapted to be intermittently connected to said first decimal carriage, and elastic con necting means between said first and second carriage whereby the shock of engagement of said second carriage with said first earriage is diminished.

L. In a calculating machine of the type described the combination. of a series of columnartotalizers, a universal totalizer adapted to be intermittently connected to any of said columnar totalizers and elastic connecting means between said columnar totalizer and said universal. totalizer whereby the shock of engagement is diminished.

5. In a calculating machine of the type described the combination of a series of columnar totalizers having connecting locations, a universal totalizer, a connecting bar adapted to engage said connecting locations, I

and an elastic mounting for said connecting bar on said universal totalizer. v

6. In a calculating machine of the type described the combination of a series of columnar tbtalizers, a universal totalizer adapted to be connected intermittently to any of said columnar totaliners, a link mounted on said universal totalizer and held in a normal position. by a spring, and a connecting bar mounted on said link and adapted to engage any of said columnar totalizers. v A

7. In a calculating machine the combination of, a totalizer, a traveling bar having a section on which. said totalizcr maybe slidably mounted, a second bar having also a section on which said totalizer may be slidably mounted, a series of connection locations on said first bar, and means automatically connecting said first bar to said second bar when said first bar has reached a predetermined point.

8. In a calculating machine the combination of, a totalizer, a traveling bar. having a' section on which said totalizer may be slidably mounted, a second bar having also a section on which said totalizer may be slidably mounted, a series of connection locations on said first bar, and means automatically connecting and disconnecting said second bar and said first bar when said first bar has reached predetermined points.

9. In a calculating machine the combination of, a totalizer, a traveling bar having a section on which said totalizer may be slidably mounted, a second bar having also a section on which said totalizer may be slidably mounted, a series of connecting locations on said first bar, and a hook on said second bar adapted to automatically connect to said connecting locations when said first bar has reached a predetermined point.

10. In a calculating machine the combination of, a totalizer, a traveling bar having a section on which said totalizer may be slidably mounted, a second bar having also a section on which said totalizer may be slidably mounted, a series of adjustable connecting locations on said first bar, and means automatically connecting said first bar to said second bar when said first bar has reached a predetermined point.

11. In a combined typewriting and computing machine the combination of, a typewriter carriage, a totalizer, a bar moving with said typewriter carriage said bar having a section on which said totalizer may be slidably mounted and having also connecting locations adjustably settable along said bar, a second reciprocating bar having a section on which said totalizer may be slidably mounted, a hook adapted to engage said connecting locations mounted on said second bar, and means for automatically and intermittently releasing said hook from said connecting locations.

12. In a combined typewriting and-computing machine the combination of, a type writer carriage, a totalizer, a bar havinga section on which said totalizer may be mounted moving with said typewriter carriage, connecting locations adjustably set table on said bar, a second reciprocating bar having a section on which said 'totalizer may be mounted, a hook mounted on said bar, a spring holding said hook in the path of said connecting locations, and means for automatically and intermittently releasing said hook from said connecting locations.

13. In a calculating machine the combination of, a totalizer, a bar having a series of adjustable connecting locations, said bar having a section on which said totalizer may be slidably mounted, a second reciprocating bar having a section on which said totalizcr may be slidably mounted, a link mounted on said second bar, a hook mounted on said link and adapted to engage said connecting locations, a spring holding said link in a normal position, and means for illltOITlfltlCtlll) and intermittently releasing said hook from said connecting locations.

14. In a calculating machine of the type described the combination of a series of columnar totalizers, a universal totalizcr adapted to be connected intermittently to any of said columnar totalizcrs, an arm moving with said universal totalizer, a link pivoted to said arm, a butter spring tending to hold said link in a given position, and a connecting bar mounted on said link and adapted to engage any of said columnar totalizers.

15. In a calculating machine of the type described, the combination of a decimal carriage, a series of connecting locations, a second decimal carriage adapted to be intermittently connected to said first decimal can riage, an arm mounted on said second deci- 'mal carriage, a link mounted on said arm, a

buffer spring holding said link in a normal position, and a connecting bar intermittently engaging said connecting locations mounted on said link.

16. In a calculating machine of the type described the combination of a decimal carriage, a series of connecting locations, :1 second decimal carriage adapted to be intermittently connected to said first decimal carriage, an arm mounted on said second. decimal carriage, a link mounted on said arm, a buffer spring holding said link in a normal position, a connecting bar intermittently engaging said connecting lo at-ions mounted on said link, and means to automatically and intermittently disengage said connecting bar from said connecting locations.

17. In a calculating machine of the type described the combination of a series of columnar totalizers, a bar on which said totalizers are mounted, said totalizers being independently adjustable on said bar, a uni versal totalize adapted to be connected intermittently to any of said columnar totalizers, a link mounted on said universal totalizer and held in a normal position by a spring, and a connecting bar mounted on. said link and adapted to engage any of said columnar totalizers 18. In a calculating machine, a columnar unit supporting member, a movable universal unit supporting member operatively associated therewith to have a part of its movement determined by said first men tioned member, unit attaching portions on each of said members, and a calculating unit unit supporting bar, a movable universal unit supporting bar operatively associated therewith to have a part of its movement determined by said first mentioned bar, unit attaching members on each of said bars, a calculating unit provided with means enabling removable and interchangeable slidable engagement thereof to the attaching portions of both of said bars, in with calculator operating means associated with both of said bars adapted to be engaged by the calculator unit in either of its positions of attachment. g 20. In a calculating machine, a columnar unit suporting member, a movable universal unit supporting member operatively assoeach of said members,

ciated therewith to have a part of its movement determined by said first mentioned member, like unit attaching portions on and a calculating unit provided' with means common to the attaching portions of both of said members to enable removable and interchangeable attachment of the unit with both of said members, in combination with calculator operating means associated with both of said members adapted to be engaged by the cal culator unit in either of its-positions of attachment.

21. In a calculating machine, the combination of a pair of calculating units, one

movable with respect to the other, and connecting instrumentalities adapted to effect a movement of the other unit when the first mentioned movable unit arrives at a predetermined coupling position, said instrumentali ties including means permitting relative yielding of the units to prevent undue shock.

22. In a calculating machine, the combination of a pair of calculating units, one movable with respectto the other, and connecting instrumenta'lities adapted to efiect a movement of the other unit whenthe first mentioned movable unit arrives at 'apredetermined coupling position, said instrumentalities including means permitting relative yielding of the units to prevent undue shock and normally the units in operative positions.

other unit to combination assist in maintaining parts of jar incident to impact and permitting the coupled unit to lag in its approach to operative fixed position relative to the prevent shock to said coupled unit. z

24. In a calculating machine, the combi nation of a. pair of calculating units, one movable with respect to the other, and connecting instrumentalities adapted to effect movement of the other unit when the first mentioned movable unit reaches a predetermined point in itstravel, said connecting instrumentalities including abutting parts, and cushioning means. to relieve said abutting parts and the coupled unit of shock incident toimpact when moving in opposite directions. 7

25. In a calculating machine of the type described, the combination of a columnar totalizer, a universal totalizer, means for intermittently connecting said universal and columnar totalizers including a movable member having a part adapted to engage the columnar totalizer, and spring means for throwing the said movable member to one of its operative positions, and for diminishing the shock of connection.

26. In a calculating machine; a columnar unit supporting member, a universal unit' supporting member operatively associated therewith, unit attaching portions on each of said members, and acalculating unit provided with means enabling removable and interchangeable engagement thereof with the attaching portions of both of said 'members, in combination. with calculator ARTHUR POOLE.

Witnesses:

R. GEO. C. 130a,, M. O. TAYLOR. 

